Home / 1,787.72-2,468.26-1,116.55

Finding the Fourth Proportional to 1,787.72, 2,468.26 and 1,116.55

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Solution

The fourth proportional to 1,787.72, 2,468.26 and 1,116.55 is: 1,541.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.72 : 2,468.26 = 1,116.55 : x
  2. Step 2: Convert to fraction form
    1,787.72/2,468.26 = 1,116.55/x
  3. Step 3: Cross multiply
    1,787.72x = 2,468.26 × 1,116.55
  4. Step 4: Simplify right side
    1,787.72x = 2,755,917.78
  5. Step 5: Solve for x
    x = 2,755,917.78/1,787.72
  6. Step 6: Final answer
    x = 1,541.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.